Savage 1905 and 1917, Hopkins Allen XL #7, Steven Diamond #7

New member, completely ignorant about guns here. My dad has the following items and wanted to know what to look for when trying to determine a fair value for them. He is looking to sell them to help pay for medical bills

Here's a pic of the Savage 1917 and also of a Dan Wesson 44 mag. (I had to laugh because I was told to look around the house for "Uncle Owen's service gun". That's when I found the others above. Didn't find the 44 mag until today and for a couple days was wondering how old Uncle Owen was to be using one of those other pistols as his Sheriff weapon. LOL)

That's a 3" barrel on the stainless 44 mag. Would there be a specific model for this gun?

The rifle and 44mag are not available but the others (Savage 1917, J. Stevens Diamond #43, and XL#7) are. (Sorry for not getting back sooner.)

I have scouted around for some average pricing on them and would like to get fair values. I'm currently looking at gunsamerica.com and what would be involved with selling them on that site. I don't know anything about selling firearms - other than they require some special handling.